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1 /* |
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2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * Example Code for showing usage of MAC APIs. |
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16 * |
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17 */ |
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18 |
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19 |
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20 /** |
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21 @file |
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22 @internalTechnology |
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23 @released |
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24 */ |
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25 |
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26 #include <cryptospi/cryptospidef.h> |
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27 #include <cryptospi/cryptomacapi.h> |
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28 #include <cryptospi/cryptoparams.h> |
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29 #include "keys.h" |
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30 #include <f32file.h> |
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31 #include "utf.h" |
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32 |
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33 using namespace CryptoSpi; |
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34 |
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35 |
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36 const TUint8 KMacBlockSize = 16; |
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37 |
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38 const TUint8 key[] = { |
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39 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
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40 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f |
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41 }; |
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42 |
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43 const TUint8 data[] = { |
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44 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
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45 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f |
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46 }; |
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47 |
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48 |
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49 #define __CLEAN_UP logBuffer = CnvUtfConverter::ConvertFromUnicodeToUtf8L(*macResult); \ |
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50 CleanupStack::PopAndDestroy(macResult); \ |
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51 CleanupStack::PushL(logBuffer); \ |
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52 User::LeaveIfError(log.Write(*logBuffer)); \ |
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53 CleanupStack::PopAndDestroy(logBuffer); |
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54 |
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55 |
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56 class TVariantPtrC : public TPtrC |
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57 { |
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58 public: |
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59 HBufC* HexStringLC(); |
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60 }; |
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61 |
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62 HBufC* TVariantPtrC::HexStringLC() |
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63 { |
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64 HBufC* parsedString = HBufC::NewLC(this->Length()*2); |
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65 TBuf<2> pair; |
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66 _LIT(KFormat2,"%02x"); |
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67 |
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68 for(TInt i = 0; i<this->Length() ; ++i) |
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69 { |
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70 TInt num = (*this)[i]; |
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71 pair.Format(KFormat2,num); |
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72 parsedString->Des().Append(pair); |
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73 } |
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74 |
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75 return parsedString; |
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76 } |
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77 |
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78 void EvaluateMacL(const TDesC8& aKey, const TDesC8& aSourceData) |
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79 { |
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80 //-----------------------------CREATION-OF-KEY-AND-MAC-INSTANCE-------------------------- |
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81 |
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82 // Set the key |
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83 CryptoSpi::TKeyProperty keyProperty = {CryptoSpi::KAesUid, KNullUid, CryptoSpi::KSymmetricKey, CryptoSpi::KNonEmbeddedKeyUid}; |
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84 CCryptoParams* keyParam =CCryptoParams::NewLC(); |
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85 keyParam->AddL(aKey, CryptoSpi::KSymmetricKeyParameterUid); |
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86 CKey* uniKey=CKey::NewLC(keyProperty, *keyParam); |
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87 |
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88 //Retrieve a Synchronous MAC Factory Object and use AES-XCBC-MAC-96 or any other MAC algorithm. |
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89 CMac* macImpl = NULL; |
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90 CMacFactory::CreateMacL(macImpl, CryptoSpi::KAesXcbcMac96Uid,*uniKey, NULL); |
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91 |
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92 //cleanup uniKey and keyParam. |
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93 CleanupStack::PopAndDestroy(2,keyParam); |
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94 CleanupStack::PushL(macImpl); |
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95 |
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96 //---------------------------------EVALUATION-OF-MAC-VALUE--------------------------------- |
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97 |
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98 // Usage of Mac APIs: MacL, UpdateL, and FinalL |
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99 |
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100 //Retrieve the 8bit mac value |
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101 HBufC* macValueIntermediate = HBufC::NewLC(KMacBlockSize); |
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102 HBufC* macValueFinal = HBufC::NewLC(KMacBlockSize); |
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103 |
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104 TPtr macPtrIntermediate = macValueIntermediate->Des(); |
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105 TPtr macPtrFinal = macValueFinal->Des(); |
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106 |
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107 //Retrieve the final 8bit mac value and convert to 16bit |
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108 macPtrIntermediate.Copy(macImpl->MacL(aSourceData.Mid(0,3))); |
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109 macImpl->UpdateL(aSourceData.Mid(3,5)); |
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110 macPtrFinal.Copy(macImpl->FinalL(aSourceData.Mid(8,8))); |
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111 |
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112 //---------------------------------WRITE-RESULTS-TO-LOG-------------------------- |
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113 |
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114 // Add log file for automated test environment |
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115 RFs fs; |
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116 User::LeaveIfError(fs.Connect()); |
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117 CleanupClosePushL(fs); |
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118 RFile log; |
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119 CleanupClosePushL(log); |
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120 User::LeaveIfError(log.Replace(fs, _L("c:\\t_mac_apis.log"), EFileShareAny|EFileWrite)); |
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121 User::LeaveIfError(log.Write(_L8("\n*** Key Used for Mac Evaluation (in hex) is = 0x000102030405060708090a0b0c0d0e0f "))); |
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122 |
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123 |
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124 //Take the 16bit descriptor and convert the string to hexadecimal |
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125 TVariantPtrC convertMac; |
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126 convertMac.Set(macPtrIntermediate); |
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127 HBufC* macResult = convertMac.HexStringLC(); |
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128 HBufC8* logBuffer = NULL; |
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129 |
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130 User::LeaveIfError(log.Write(_L8("\n*** Mac value for hex data 0x000102 is = "))); |
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131 |
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132 // cleanup macResult and logBuffer |
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133 __CLEAN_UP; |
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134 |
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135 convertMac.Set(macPtrFinal); |
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136 macResult = convertMac.HexStringLC(); |
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137 |
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138 User::LeaveIfError(log.Write(_L8("\n*** Mac value for hex data 0x000102030405060708090a0b0c0d0e0f is = "))); |
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139 |
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140 // cleanup macResult and logBuffer |
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141 __CLEAN_UP |
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142 |
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143 User::LeaveIfError(log.Write(_L8("\n\n 0 tests failed out of 1 \t\n"))); |
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144 //------------------------------------------CLEANUP------------------------------------------ |
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145 |
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146 //cleanup log, fs, macValueFinal, macValueIntermediate and macImpl |
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147 CleanupStack::PopAndDestroy(5, macImpl); |
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148 } |
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149 |
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150 void MainL() |
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151 { |
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152 const TPtrC8 Key(key, KMacBlockSize); |
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153 const TPtrC8 Data(data, KMacBlockSize); |
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154 |
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155 // pass the key and the source data for MAC evaluation |
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156 __UHEAP_MARK; |
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157 EvaluateMacL(Key,Data); |
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158 __UHEAP_MARKEND; |
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159 } |
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160 |
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161 TInt E32Main() |
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162 { |
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163 CTrapCleanup* cleanupStack = CTrapCleanup::New(); |
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164 if (cleanupStack == NULL) |
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165 { |
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166 return KErrNoMemory; |
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167 } |
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168 TRAP_IGNORE(MainL()); |
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169 delete cleanupStack; |
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170 return KErrNone; |
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171 } |